# I/O Field vs ABB CLOSER

The clearest difference is update cadence: ABB CLOSER at every 3 months against I/O Field's every 14 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

I/O Field ships an update every 14 months, ABB CLOSER every 3 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | I/O Field | ABB CLOSER |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 months** |
| Size | 123 MB | 134 MB |
| Requires iOS | 12.4 | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WAGO Kontakttechnik GmbH & Co. KG](https://appshunter.io/developer/726217018) | [ABB Information Systems AG](https://appshunter.io/developer/1026885389) |

## What reviewers say

### I/O Field

[App page](https://appshunter.io/ios/app/io-field/id1475074379)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ABB CLOSER

[App page](https://appshunter.io/ios/app/abb-closer/id1560948190)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is I/O Field free?

I/O Field is free to download, with no in-app purchases.

### Is ABB CLOSER free?

ABB CLOSER is free to download, with no in-app purchases.

### Do I/O Field or ABB CLOSER have ads?

Neither I/O Field nor ABB CLOSER shows ads.

### Which is updated more often, I/O Field or ABB CLOSER?

I/O Field ships an update every 14 months, and ABB CLOSER every 3 months. Most recently, I/O Field was updated on October 30, 2026 and ABB CLOSER on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*